Henby h



(No Model.) I H. H; BARKER.

- Thill Couplin No. 243,191. Pat ed June 21,1881.

M/ztzz asses [J2 wzzwzt 6&4. KM 1/6 )9, 6

UNITED STATES PATENT ()FFICE.

HENRY H. BARKER, OF HARTFORD, CONNECTICUT, ASSIGNOR TO HIMSELF AND EDWARD BULL, OF SAME PLACE.

THlLL-COUPLING.

SPECIFICATION formingpart of Letters Patent No. 243,191, dated June 21, 1881.

Application filed March 22, 1881. (No model.)

To all whom it may concern Be itknown that I, HENRY H. BARKER, of Hartford, in the county of Hartford, and State of Connecticut, haveinvented certain new and useful Improvements in Thill-Coupliugs; and I do hereby declare that the following is a full, clear, and exact description thereof, whereby a person skilled in the art can make and use the same, reference being had to the accompanyro ing drawings, and to the letters of reference marked thereon.

Like letters inthe figures indicate the same parts.

My invention relates to a new method of attaching the thill-iron to the axle, so as to form the joint upon which the thills move up or down. 5

The object of my improvement is to provide a strong and rigid joint which will not rattle 2e or beco'me loose, and which can be adjusted to keep it tight as the parts wear.

In the accompanying drawings illustrating my invention, Figure 1 is a view of my improved thill coupling from the under side.

Fig. 2 is a Vertical section through the end of the thill and axle, showing the parts beyond. Fig. 3 is a section through the joint on the line a b of Fig. 1.

- A is the thill.

B is the thill-iron, which forms the joint 0 the coupling, and is bolted to the thill in the usual manner.

C is the forward axle of a carriage, around which the clip D passes, which carries the lugs 3 5 E, between which the thill-iron is held to form the coupling. These lugs or cheek-pieces E are commonly forged in one piece with the clip D, and are held to the axle by the nuts D in the usual manner.

F is a cross-bar which connects the outer o ends of the parts E E and firmly holds them from being forced apart. It may be in the form of a rivet or bolt, or it may be forged in one piece with the cheeks E. It lies in front of the thill-irons in such a position as will per- 5 mit the ends of the thills to touch the ground without interfering with it, as shown in Fig. 2.

G G are two screw-bolts turning in hollow threads in the cheeks E, and having conical points, which fit into conical recesses in the sides of the thill-ironB, as shown in Fig. 3.

H H are lock-nuts fitting on the screws G, and serving to clamp them in position after the conical points are screwed into the sockets in B.

It will be observed that the joint, as above described, can always be kept tight and free from play or rattle by simply setting up the screws G to the proper degree of pressure in their sockets, while at the same time the crossbar Fholds the sides E together so that they cannot spread. This bar is an essential feature of my improvement, for without it the sides E would spread and loosen the joint, ow-

ing to the conical form of the pivots.

What I claim as my invention is The combination of the bar F, the conicalpointed screws G, the lock-nuts H, the thilliron B, having conical recesses in its sides,the cheeks E, and the clip D, to form a thill-coup- 7o ling, substantially as described.

HENRY H. BARKER.

Witnesses THEo. G. ELLIs, WILMOT HORTON. 

